Andy Murray will undergo a procedure on his back after he was forced to retire from his second-round match at Queen's with injury.
Three-time Grand Slam champion Murray, 37, decided he could not continue when trailing Australia's Jordan Thompson 4-1 in the first set on Wednesday.
The two-time Olympic gold medallist is set to retire later this year and this week said ending his career at either Wimbledon or Paris 2024 would be "fitting".
Murray is set to undergo a procedure on Saturday - nine days before the start of Wimbledon, where he is a two-time champion, on 1 July.